fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mmm] [10.0% done] [ 14759/   732 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [13.8% done] [ 15473/  1410 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [16.7% done] [ 11930/  4266 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [19.4% done] [ 11369/  3376 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [22.6% done] [  9309/  4213 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [25.8% done] [  6989/  7720 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [27.3% done] [  8301/  4981 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [30.3% done] [  4831/  7172 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [32.4% done] [  5331/  8155 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [34.3% done] [  7326/  4039 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [36.1% done] [  8797/  1978 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.8% done] [  8248/  4246 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [40.5% done] [  6680/  4530 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.0% done] [  7082/  3376 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  7448/  2149 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  6783/  1893 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.5% done] [  5229/  3604 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  5180/  3835 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  2990/  4847 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.7% done] [  4136/  3303 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [54.8% done] [  3819/  4412 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [55.8% done] [  5404/  1231 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11749, got signal=6
Threads: 2: [m_m] [56.8% done] [  4343/  2702 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11750, got signal=6
Threads: 1: [m__] [61.9% done] [   300/  8777 kb/s] [eta 00m:16s]
Threads: 1: [m__] [67.5% done] [  3120/  4295 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11748, got signal=6

fio: (groupid=0): err= 0: pid=11748
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.3%, 4=29.4%, 8=67.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.3%, 10=1.2%, 20=8.1%, 50=21.6%, 100=10.8%
     lat (msec): 250=42.4%, 500=13.7%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11749
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.6%, 4=25.8%, 8=72.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.2%, 10=0.4%, 20=4.0%, 50=12.8%, 100=24.9%
     lat (msec): 250=52.7%, 500=4.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11750
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.4%, 4=22.5%, 8=75.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.7%, 10=0.3%, 20=3.5%, 50=9.6%, 100=27.5%
     lat (msec): 250=54.3%, 500=3.5%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3513/2299, merge=566/117, ticks=64392/43680, in_queue=108068, util=99.10%
0.20user 0.36system 0:27.70elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2515minor)pagefaults 0swaps